[arm] Don't call branch_offset within CheckConstPool.

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index 72786597f0ecfc7b2236dabd055dc9d24e548d70..96bdf79facedebfecd39c57e2cda0668f1f7c006 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -3838,10 +3838,7 @@ void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
     bind(&size_check);
 
     // Emit jump over constant pool if necessary.
-    Label after_pool;
-    if (require_jump) {
-      b(&after_pool);
-    }
+    if (require_jump) b(size - kPcLoadDelta);
 
     // Put down constant pool marker "Undefined instruction".
     // The data size helps disassembly know what to print.
@@ -3925,10 +3922,6 @@ void Assembler::CheckConstPool(bool force_emit, bool require_jump) {
     RecordComment("]");
 
     DCHECK_EQ(size, SizeOfCodeGeneratedSince(&size_check));
-
-    if (after_pool.is_linked()) {
-      bind(&after_pool);
-    }
   }
 
   // Since a constant pool was just emitted, move the check offset forward by